<a-card style="margin-top:30px;padding-top:30px;">
	<a-form :label-col="{ span: 5 }" :wrapper-col="{ span: 12 }">
    <a-form-item label="右下角框框宽">
      <a-input v-model.number="chunkWidth" type="number"
        v-decorator="['note', { rules: [{ required: true, message: '该项不能为空' }] }]"
      ></a-input>
    </a-form-item>
    <a-form-item :wrapper-col="{ span: 12, offset: 5 }">
      <a-button type="primary" @click="chunkWidthSubmit">修改</a-button>
    </a-form-item>
  </a-form>
</a-card>